• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Epigenetic regulation as novel approach for organ regeneration - Learning from the stress response mechanism

Research Project

Project/Area Number 21K19533
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 55:Surgery of the organs maintaining homeostasis and related fields
Research InstitutionNagasaki University

Principal Investigator

LI Tao-Sheng  長崎大学, 原爆後障害医療研究所, 教授 (50379997)

Co-Investigator(Kenkyū-buntansha) 後藤 信治  長崎大学, 原爆後障害医療研究所, 助教 (50186889)
Project Period (FY) 2021-07-09 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2023: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
Fiscal Year 2022: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsイモリ / エピジェネティック制御 / ストレス応答 / 再生 / 癌 / 放射線傷害 / ヒストン修飾 / マウス
Outline of Research at the Start

再生能力が大きく異なる両生類のイモリと哺乳類のマウスの心臓組織細胞を用いて、再生を効率的に誘導できる酸素や力学刺激に対する応答、特にエピジェネティック修飾を研究の焦点とし、①イモリとマウスの心臓組織細胞のストレス応答機構、特にエピジェネティック修飾、細胞増殖、細胞脱分化に関連するシグナルの活性化の違い、②エピジェネティック制御によるマウス心筋細胞の増殖促進と脱分化誘導、③エピジェネティック制御によるマウス傷害心臓の再生修復促進効果、などについて調べる。

Outline of Final Research Achievements

We evaluated the differences in the expression of metabolic and epigenetic-related factors in lung and heart tissues of healthy adult mice and newts under different oxygen conditions. The results showed that 8% oxygen (hypoxia) stimulation significantly increased the expression of Dnmt3α, Mbd2, Mbd3, and Hdac2 in newt lung tissue, and significantly decreased the expression of Dnmt1 and Dnmt3α in mouse lung tissue. We also succeeded in efficiently expanding primary tissue cells from newts using our original method. These primary tissue cells from newts can be maintained for long periods without senescence, and are sensitively respond to radiation and oxidative stress stimuli.

Academic Significance and Societal Importance of the Research Achievements

本研究で、イモリとマウスは酸素濃度変化に対する応答機構が異なることを判明できた。また、我々の改良した方法でイモリ組織細胞を長期培養増幅に成功し、イモリの組織細胞をin vitro実験に提供することが可能となった。これらの研究成果は、イモリに秘めている生物学的特性に関する分子機構の解明に繋がり、臓器再生、発癌予防、及び放射線傷害軽減などにブレークスール成果を生み出すことに期待できる。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (4 results)

All 2024 2023 2021

All Journal Article (3 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (1 results)

  • [Journal Article] Comparison of hypoxia- and hyperoxia-induced alteration of epigene expression pattern in lungs of Pleurodeles waltl and Mus musculus2024

    • Author(s)
      Md Mahmudul Hasan, Reiko Sekiya, Xu Zhang, Mhd Yousuf Yassouf, Tao-Sheng Li
    • Journal Title

      PLoS One .

      Volume: 19 Issue: 2 Pages: e0299661-e0299661

    • DOI

      10.1371/journal.pone.0299661

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ex vivo expansion of primary cells from limb tissue of Pleurodeles waltl2023

    • Author(s)
      Md Mahmudul Hasan, Reiko Sekiya, Tao-Sheng Li
    • Journal Title

      Dev Growth Differ .

      Volume: 65 Issue: 5 Pages: 255-265

    • DOI

      10.1111/dgd.12866

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Immunohistochemical Analysis of Histone H3 Modification in Newt Tail Tissue Cells following Amputation2021

    • Author(s)
      Wu Ji-Wen、Zhang Xu、Sekiya Reiko、Aoyagi Kiyoshi、Li Tao-Sheng
    • Journal Title

      Stem Cells International

      Volume: 2021 Pages: 1-8

    • DOI

      10.1155/2021/8828931

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Primary cells of Pleurodeles waltl: future tool for in vitro molecular biology studies2023

    • Author(s)
      Md. Mahmudul Hasan, Tsuyoshi Kawabata, Reiko Sekiya, Tao-Sheng Li
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report

URL: 

Published: 2021-07-13   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi